I bought a gaming sound card a week ago. Before buying I changed the AMD Radeon 5450 graphics card for AMD Radeon 4540 graphics card that I got a sound card fit into the motherboard. After the exchange, turned on the computer again, and I removed the old graphics drivers and installed the new drivers for the current graphics cards. When I try to play the SG, the game shuts down when I try to buy a gun, and the screen goes black.